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#2771838 - 10/29/13 11:25 PM Oil in the intake manifold
Qball1982 Offline
Rookie

Registered: 10/21/11
Posts: 74
Loc: Albuquerque NM
Hey guys,

About a year ago I replaced the valve cover gaskets while I was replacing the timing chain tensioners because, well I was already in there, and because I was noticing some oil seeping around the plugs and injectors. So...that didn't fix the issue..it's not as bad but still there.

Since it was time to flush the coolant, I decided to pull the intake manifold to see whats going on. I have some nasty oil build up around the gaskets and a bit of oil in the intake itself. So I was looking to see what the possible issues could be.

Some background: I change the oil every 5-6k miles with full synthetic, oil filter with every change, replaced the PCV valve about a year ago, new valve cover gaskets a year ago, and I Seafoam once a year as well.

When I put it all back together I plan on doing a compression test to see about the rings. The car is sitting at just under 172k miles

Links to pics:
Drivers side 2 front ports
Drivers side 2 rear ports
Passenger 2 front ports
Passenger 2 rear ports
Intake manifold ports
Intake manifold ports 2
Intake manifold ports 3
Intake manifold ports 4
Front outside of the intake manifold


Edited by Qball1982 (10/29/13 11:26 PM)
_________________________
2002 MGM LS, ~168000 miles, MOOG front suspension rebuild, MOOG rear cargo coils, Marauder/HPP rear sway bar, Raybestos Advanced Technology QOA pads and rotors, LED interior lights, dual exhaust, 3.27 LSD, Steeda underdrive pulleys, Heinous rear control arms

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#2771904 - 10/30/13 09:15 AM Re: Oil in the intake manifold [Re: Qball1982]
Bangster Online   content

Poobah

Registered: 11/30/01
Posts: 9397
Loc: Tucson Az
Normal higher mileage vehicle from the PCV system coating. I am not sure if an oil separator in the PCV line would help or not, I am sure it would, but probably not worth the effort.

Replacing the PCV will also help, but as the engine wears, it will cause more oil to get there from the PCV and other hose from other valve cover.
_________________________
00 Grand Marquis LS Premium - 97 Cougar 4.6 Sport - 89 Cougar LS - 63 Falcon 302 - 82 F-150 - 97 Mark VIII LSC - 2017 Escape SE - 2012 Fusion Sport AWD

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#2772241 - 10/31/13 01:28 AM Re: Oil in the intake manifold [Re: Bangster]
Qball1982 Offline
Rookie

Registered: 10/21/11
Posts: 74
Loc: Albuquerque NM
Thanks for the reply and info.
_________________________
2002 MGM LS, ~168000 miles, MOOG front suspension rebuild, MOOG rear cargo coils, Marauder/HPP rear sway bar, Raybestos Advanced Technology QOA pads and rotors, LED interior lights, dual exhaust, 3.27 LSD, Steeda underdrive pulleys, Heinous rear control arms

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#2772289 - 10/31/13 09:53 AM Re: Oil in the intake manifold [Re: Qball1982]
RF_Overlord Offline

Poobah

Registered: 12/14/02
Posts: 7470
Loc: MA
Cam lobes look decent for 172k...
_________________________
'03 Mercury Marauder (The Blackbird)
Trilogy Motorsports supercharged #61
Too many mods to list / Driveway Queen

'04 Grand Marquis LS Limited Edition (Spruce Green)
Daily Driver (Thanks, Adam!)

'00 Grand Marquis GS (Silver)
Rotted frame and broken transmission crossmember
Being resurrected...slowly.

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#2772299 - 10/31/13 10:24 AM Re: Oil in the intake manifold [Re: Qball1982]
BigMerc96 Offline

I know nothing
Posting Addict

Registered: 06/05/10
Posts: 19868
Loc: I can see Detroit from here!
Agreed its normal. Even at the "low mileage" of the 80k the Merc had when I did its manifold, there was a nice oil film in the intake. I did run a oil separator in the pcv line on car and it did catch a fair bit of oil, but it eventually turned its self into a vacuum leak and I removed it.
_________________________
-Steve

2006 Audi A6 ~132k miles, stock.
1998 Mercury Grand Marquis LS HPP ~100k miles, slowly acquiring modifications.
1997 Town Car Cartier ~145k miles, Ported Plenum, Gutted Airbox, Contour E-fan Retrofit, Dual exhaust with Magnaflows, cats deleted, MSD Ignition, KYB Gas-A-Justs, P71 front bar, air ride reinstated, Projector retrofit, Caddy 4-note horn retrofit, Wood rim steering wheel retrofit, holistic weight reduction as the parts fall off..
1996 Mercury Grand Marquis GS 117,485mi. R.I.P. 7/14/12 frown

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